How does Teddy’s father move the plot forward in "Rikki-Tikki-Tavi"? He shows Rikki-tikki how to fight Nag and Nagaina. He kills
Nag after Rikki-tikki corners him in a water jar. He tells Rikki-tikki that he overheard the cobras’ plan. He comforts Teddy and offers Rikki-tikki some food.
While a subtitle can inform the reader of the topic of the text or give more information about the title, its main purpose is to be an extension of the title.
